Automatical cooking apparatus.



No. 784,402. I A PATENTED MAR. 7, 1905.

0. HUTZLER. AUTOMATIGAL COOKING APPARATUS.

APPLICATION FILED APR. 29, 1903.

A TTOHNE Y8.

UNITED STATES Patented March '7, 1905.

PATENT OFFICE.

AUTOMATICAL COOKING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 784,402, dated March 7,1905.

Application filed April 29, 1903. Serial No. 154,829.

To (all 10/1/0717 7 15 may col warn.-

Be it known that 1, O'r'ro HU'rzLER, a citizen of the Republic ofSwitzerland, residing in Zurich, Switzerland, have invented certain newand useful Improvements in (looking Apparatus, of which the following isa specification.

This invention relates to cooking apparatus, and has for its object toprovide means by which victuals after having been heated approximatelyto their boiling-point on suitable heating means are cooked to a finishseparate from the heating means, and consequently without theexpenditure of a continuous supply of fuel.

For this purpose the invention consists of a heat-insulating case orreceptacle and a heat retainer or accumulator, which is heated at thesame time with the vessel in which the victuals are heated and thenplaced within the vessel or insulated case or receptacle, thiscombination being adapted to complete the cooking of thepartially-cooked food without the use of fuel in as quick a manner as isattained in the ordinary way heretofore, necessitating constantreplenishing of fuel, as will be more fully described hereinafter andfinally pointed out in the claims.

1n the accompanying drawings, Figure 1 is a vertical central section ofmy improved cooking apparatus. Fig. 2 is a horizontal transverse sectionof the same, showing the heat-retaining body or accumulator; and Fig. 3is an elevation of a cylindrical form of my improved cooking apparatus.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents a base-plate made of suitablematerial non-conductive of heat, provided with handles (Z. Correspondingto the base-plate A a cover G, also of suitable material non-conductiveof heat, is provided, which together with the base-plate forms the,heat-insulating case or receptacle Intel-posed between the vessel 0 andthe base-plate A is a heat-retaining body or accumulator B, whichconsists of several metal rings or disks 5 b, one above the other andseparated by projections a. These rings or disks are perforated andprovided with ribs 0, so as to permit ample passage of heat,

through the disks and at the same time minimum contact of the disks withthe vessel adapted for culinary purposes. The receptaclefwhich ispreferably cylindrical, may be made of any suitable size, so as toinclose either one or more culinary vessels.

The procedure of my improved cooking apparatus is as follows: Theaccumulator B, together with the vessel, is heated, whereby the heatpasses through the perforations of the disks of the heat-retaining bodyor accumulator and, due to the small contact of the ribs of theaccumulator, causes an etlicient and ample contact with the vessel.victuals in the vessel are heated to their boiling-point, theheat-retaining body or accumulator, together with the vessel, is placedon the base-plate A and covered by the cover G, which thereby inclosesthe vessel and the accumulator and prevents the escape of heat from thesame. The heat acquired in the accumulator during the heating of thesame, together with the vessel, is gradually given off by radiation tothe vessel, and as all heat is prevented from escaping from thereceptacle, owing to its high insulating properties, the food in thevessel is subjected to all the heat of the accumulator. By these meansit has been found that it is only necessary to heat the food in asuitable vessel up to its boilingpoint and then place the vessel,together with the accumulator, as described, in the heat-insulatingreceptacle, whereby the cooking of food will be finished in the sametime as it required for the cooking of the same on the ordinary heatingmeans heretofore, which required constant replenishing of fuel.

1 claim as new and desire to secure by Letters Patent 1. A cookingapparatus, comprising a baseplate of suitable material non-conductive ofheat, a culinary vessel, a heat-retaining body consisting of a pluralityof disks, detachably interposed between the vessel and the baseplate,and adapted to be heated with the vessel, and a cover inclosing saidvessel and heatretaining body, substantially as described.

2. In a cooking apparatus, the combination with a baseplate,of suitablematerial non-conl/Vhen the I of a culinary vessel, a heat-retaining bodyconsisting of a plurality of disks, and means, of

suitable material non-conductive of heat, in-

closing said vessel and heat-retaining body.

In testimony that I claim the foregoing as my invention 1 have signed myname in pres-' I5 ence of two subscribing witnesses.

OTTO HUTZLER. Witnesses:

ANTON J UNGE, A. LIEBERKNECHT.

